//| Copyright Inria May 2015
//| This project has received funding from the European Research Council (ERC) under
//| the European Union's Horizon 2020 research and innovation programme (grant
//| agreement No 637972) - see http://www.resibots.eu
//|
//| Contributor(s):
//|   - Jean-Baptiste Mouret (jean-baptiste.mouret@inria.fr)
//|   - Antoine Cully (antoinecully@gmail.com)
//|   - Konstantinos Chatzilygeroudis (konstantinos.chatzilygeroudis@inria.fr)
//|   - Federico Allocati (fede.allocati@gmail.com)
//|   - Vaios Papaspyros (b.papaspyros@gmail.com)
//|   - Roberto Rama (bertoski@gmail.com)
//|
//| This software is a computer library whose purpose is to optimize continuous,
//| black-box functions. It mainly implements Gaussian processes and Bayesian
//| optimization.
//| Main repository: http://github.com/resibots/limbo
//| Documentation: http://www.resibots.eu/limbo
//|
//| This software is governed by the CeCILL-C license under French law and
//| abiding by the rules of distribution of free software.  You can  use,
//| modify and/ or redistribute the software under the terms of the CeCILL-C
//| license as circulated by CEA, CNRS and INRIA at the following URL
//| "http://www.cecill.info".
//|
//| As a counterpart to the access to the source code and  rights to copy,
//| modify and redistribute granted by the license, users are provided only
//| with a limited warranty  and the software's author,  the holder of the
//| economic rights,  and the successive licensors  have only  limited
//| liability.
//|
//| In this respect, the user's attention is drawn to the risks associated
//| with loading,  using,  modifying and/or developing or reproducing the
//| software by the user in light of its specific status of free software,
//| that may mean  that it is complicated to manipulate,  and  that  also
//| therefore means  that it is reserved for developers  and  experienced
//| professionals having in-depth computer knowledge. Users are therefore
//| encouraged to load and test the software's suitability as regards their
//| requirements in conditions enabling the security of their systems and/or
//| data to be ensured and,  more generally, to use and operate it in the
//| same conditions as regards security.
//|
//| The fact that you are presently reading this means that you have had
//| knowledge of the CeCILL-C license and that you accept its terms.
//|

#ifndef LIMBO_TOOLS_SYS_HPP
#define LIMBO_TOOLS_SYS_HPP

#include <ctime>
#include <string>

#if defined(__MINGW32__) || defined(_MSC_VER)
#include <winsock2.h>
#else
#include <unistd.h>
#endif

namespace limbo {
    namespace tools {
        /// @ingroup tools
        /// easy way to get the current date
        inline std::string date()
        {
            char date[30];
            time_t date_time;
            time(&date_time);
            strftime(date, 30, "%Y-%m-%d_%H_%M_%S", localtime(&date_time));
            return std::string(date);
        }

        /// @ingroup tools
        /// easy way to get the hostame
        inline std::string hostname()
        {
            char hostname[50];
            int res = gethostname(hostname, 50);
            assert(res == 0);
            res = 0; // avoid a warning in opt mode
            return std::string(hostname);
        }

        /// @ingroup tools
        /// easy way to get the PID
        inline std::string getpid()
        {
            return std::to_string(::getpid());
        }
    }
}

#endif
